Yedora, Grave Gardener, Proteus Machine, and Goblin Bombardment

Prerequisites

• Yedora, Grave Gardener on the battlefield
• Proteus Machine on the battlefield
• Goblin Bombardment on the battlefield

Steps

1. Activate Goblin Bombardment by sacrificing Proteus Machine
2. When Proteus Machine dies, Yedora triggers, returning Proteus Machine to the battlefield face down as a Forest land
3. Resolve the Goblin Bombardment ability, dealing 1 damage to any target
4. Activate Proteus Machine by tapping it, adding
5. Activate Proteus Machine's morph ability by paying , turning it face up
6. Repeat

Results

• Infinite damage
• Infinite death triggers
• Infinite green mana
• Infinite landfall triggers
• Infinite LTB
• Infinite sacrifice triggers